GB/T 45506-2025 Active National standards

GB/T 45506-2025 Residual resistance ratio measurement—Residual resistance ratio of cavity-grade Nb superconductors

Publish Date: 2025-04-25 Implement Date: 2025-11-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: GB/T 45506-2025

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Heavy metals and their alloys

ICS Name: Electronics, magnetism, and the measurement of electricity and magnetism.

Publish Date: 2025-04-25

Implement Date: 2025-11-01

Pages: 28 pages

Scope

This document describes the testing method for the residual resistance ratio (rRRR) of resonant cavity-grade niobium.
This document is applicable to high-purity niobium with an rRRR in the range of 150 to 600. The niobium superconductors described in this document have rectangular or circular cross-sections, with a cross-sectional area of 1 mm2 to 20 mm2, and a length that is no less than 10 times the width or diameter, but no more than 25 times the width or diameter.